We're dividing 37177391 by 66 
The aim is to understand the frequency of 66 in 37177391.

Step 1:
66 can be fit into 3 0 times, resulting in a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (7) from the dividend to 3 and continue with: 37 / 66

Moving on to step 2:
If we divide 37 by 66, we get 0 and a remainder of 37.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 37 leaves us with 37.
Bring next digit (1) of the dividend behind the 37 and repeat the process: 371 / 66

Step 3:
371 divided by 66 is 5 with a remainder of 41.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Subtracting 330 from 371 leaves us with 41.
Include the next digit (7) from the dividend after 41, then repeat: 417 / 66

Advancing to step 4:
The number 66 fits into 417 6 times, leaving a remainder of 21.
The next digit of our result is 6. 
Result so far: 56.0
If we take 396 away from 417, we end up with 21.
Include the next digit (7) from the dividend after 21, then repeat: 217 / 66

Moving on to step 5:
66 can be fit into 217 3 times, resulting in a remainder of 19.
Write down 3 as next digit of the result. 
Result so far: 563.0
Deduct 198 from 217 and we're left with 19.
Append the next digit (3) from the dividend to 19 and continue with: 193 / 66

Moving on to step 6:
The number 66 fits into 193 2 times, leaving a remainder of 61.
The next digit of our result is 2. 
Result so far: 5632.0
Deduct 132 from 193 and we're left with 61.
Append the next digit (9) from the dividend to 61 and continue with: 619 / 66

Step 7:
When dividing 619 by 66, we get 9 with a remainder of 25.
Write down 9 as next digit of the result. 
Result so far: 56329.0
If we take 594 away from 619, we end up with 25.
Bring next digit (1) of the dividend behind the 25 and repeat the process: 251 / 66

Going ahead to step 8:
The number 66 fits into 251 3 times, leaving a remainder of 53.
Record the quotient 3 as the next digit in the result. 
Result so far: 563293.0
Subtracting 198 from 251 leaves us with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Let's proceed to step 9:
The number 66 fits into 530 8 times, leaving a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 563293.8
If we take 528 away from 530, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 10:
The number 66 fits into 20 0 times, leaving a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 563293.8
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 11:
The number 66 fits into 200 3 times, leaving a remainder of 2.
The number 3 becomes the next digit in our result. 
Result so far: 563293.803
Deduct 198 from 200 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 12:
The number 66 fits into 20 0 times, leaving a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 563293.803
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 13:
66 can be fit into 200 3 times, resulting in a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 563293.80303
Deduct 198 from 200 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 14:
66 goes into 20 0 times with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 563293.80303
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 15:
The number 66 fits into 200 3 times, leaving a remainder of 2.
The next digit of our result is 3. 
Result so far: 563293.8030303
Subtract 198 from 200 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 16:
The number 66 fits into 20 0 times, leaving a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 563293.8030303
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

After the division, we end up with 563293.8030303 and a remainder of 2e-08.